JPH08133597A - Wire winding device - Google Patents

Abstract

PURPOSE: To provide a wire winding device which can follow even the speed fluctuation of a wire rod to impart a stable back tension. CONSTITUTION: This device is formed of a winding part 4, a tension device 2, and a back tension device 3. The back tension device 3 has a cylinder driving device 21 for energizing the shaft 19 of a sixth pulley 18 provided between the tension device 2 and the winding part 3 with a fixed force. A cylinder 22 energizes the sixth pulley 18 with a force smaller than the resistance force imparted to a wire rod by the tension device 2. The wire rod is wound in U- shape by three pulleys of the sixth pulley 18, a fifth pulley 18 on the inlet side, and a seventh pulley 35 on the outlet side. Thus, event when the wire rod speed is fluctuated when the wire rod is wound on a core 40 such as square bobbin by the winding part 4, the back tension can be minutely controlled to be stabilized by the shaft movement of the sixth pulley 18, so that the alignment winding can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device.

[0002]

2. Description of the Related Art As a conventional winding device, a wire rod supply source is provided on the inlet side of the winding device, and a predetermined resistance (pulling force) is applied to the wire rod led out from the wire rod supply source and pulled out by a winding portion. A tension part is provided, and a back tension part that detects the tension of the wire rod and adjusts the tensile force applied by the tension part is provided on the exit side of the tension part.
The wire rod led out from the back tension portion is wound around the winding portion.

This conventional winding device is provided with a tension device for applying a tensile force to the wire rod introduced into the winding portion, and a spring type back tension device for adjusting the tensile force of the wire rod led out from the tension device. Things were known. This back tension device is a system in which a wire is wound around a pulley at the tip of a swing arm, and a biasing force is applied by a spring to the arm in a direction in which a tensile force is applied to the wound wire.

[0004]

However, according to such a conventional winding device, since the back tension device of the spring type is adopted, the back tension force is changed when the swing angle of the arm changes. There is a problem of change. In addition, since the conventional back tension device adjusts the braking force of the tension device according to the arm swing angle, it is caused by the response delay from the detection of the change in the arm swing angle to the start of the response of the brake force adjustment. Therefore, there is a problem that it becomes difficult to perform the aligned winding in the winding portion.

Further, since such a conventional back tension device is large-scaled and is installed at a position far away from the position where the winding part is provided, when it reaches the winding part from the tension device, it is in the middle of the process. The resistance of the wire may cause new slack in the wire. An object of the present invention is to provide a winding device that continuously provides a stable predetermined back tension force.

[0006] Another object of the present invention is to provide a winding device capable of applying a stable back tension by following a speed fluctuation of a wire rod. Yet another object of the present invention is to
An object of the present invention is to provide a winding device including a back tension device that can be installed near the position of the winding portion.

[0007]

A winding device according to claim 1 of the present invention for achieving the above object adopts the following configuration. The winding device includes a winding portion, a tension device, and a back tension device. The tension device is provided on the introduction side of the winding portion and applies a tensile force to the wire. The back tension device includes a back tension pulley provided between the tension device and the winding portion, and a cylinder that urges a shaft of the back tension pulley to apply back tension to a wire wound around the back tension pulley. ,
Also, it has a regulator that constantly regulates the fluid pressure acting on this cylinder. As the fluid, air, hydraulic oil or the like can be used.

According to a second aspect of the present invention, in the winding device according to the first aspect, the cylinder urges the back tension pulley with a force smaller than a resistance force applied to the wire by the tension device. The winding device according to claim 3 is
In the configuration of claim 1 or 2, an introduction side pulley is provided on the introduction side of the back tension pulley, and a wire rod is wound around the back tension pulley in a U-shape.

A winding device according to a fourth aspect of the present invention is provided with the first and second aspects.
Alternatively, in the configuration of claim 3, the winding portion is configured by winding a wire rod on a square bobbin. According to a fifth aspect of the present invention, in the winding device according to the fourth aspect, the winding portion is a flyer type winding portion.

[0010]

According to the above configuration of the present invention,
According to the first aspect, the back tension pulley of the back tension device provided on the introduction side of the winding portion is provided so as to be axially movable, and the shaft is movable by the cylinder drive device, and the cylinder pressing force is constant by the fluid pressure. Since it is adjusted by the regulator so that even if the moving speed of the wire changes, a constant back tension can be stably applied regardless of the size of the cylinder stroke. The effect is that the winding can be aligned.

According to the winding device of the second aspect, since the cylinder urges the back tension pulley with a force smaller than the resistance force applied to the wire rod by the tensioning device, the tensioning device and the winding portion are connected to each other. While removing the slack in the wire rod, continue to apply tensile force to the wire rod. In the winding device according to the third aspect, since the wire rod is wound around the back tension pulley in a U-shape, the back tension applied to the wire rod can be precisely controlled.

According to the winding device of the fourth aspect, when the wire rod is wound on the square bobbin, the peripheral speed at a specific angular position drawn when the square bobbin rotates varies. Even if there is a change, the back tension is effectively kept stable in a limited range, so that there is an effect that the winding can be satisfactorily and effectively aligned.

According to the winding device of the fifth aspect, the tensioning device and the back tensioning device can perform the aligned winding at a high speed in the flyer type winding portion and without causing slack in the wire rod.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. An embodiment in which the present invention is applied to a magnet stator coil winding portion will be described with reference to FIGS.
As shown in FIG. 1, the winding device includes a winding supply source 1, a tension device 2, a back tension device 3, a cylinder drive device 21 that drives the back tension device 3, and a winding portion 4. .

The winding supply source 1 is a wire rod source in which a wire rod such as a lead wire is wound around a conical core body 33 fixed to a container 32 as shown in FIG. The wire drawn from the winding supply source 1 is supplied to the tension device 2 via a pulley 9 rotatably supported by the frame 11. The tension device 2 includes a first pulley 12, a second pulley 13, a third pulley 14 and a fourth pulley 15 which are rotatably supported by the frame 11. First pulley 1
The wire drawn out from No. 2 is wound around the second pulley 13 to the third pulley 14, and the wire drawn out from the third pulley 14 is wound around the second pulley 13 again in a cross shape. The wire rod wound around the second pulley 13 in the same direction again crosses the second pulley 13 again and is wound around the third pulley 14, and the wire rod led out from the third pulley 14 is wound around the fourth pulley 15. The wire rod wound around and led out from the fourth pulley 15 is supplied to the back tension device 3.

The third pulley 14 is provided with an electromagnetic powder type tension portion, and in order to apply a desired tension to the wire rod, the third pulley 14 applies a rotational force to the wire rod so as to resist the movement of the wire rod. It employs a system in which 14 is applied with a brake. The back tension device 3 is located between the tension device 2 and the winding portion 4. The back tension device 3 includes a fifth pulley 17 rotatably attached to a shaft fixed to the frame 11, and a fifth pulley 17
It has a sixth pulley 18 which winds the wire drawn out from the pulley 17 and draws it out to the winding part 4. 5th pulley 1
Reference numeral 7 is an introduction side pulley of the sixth pulley 18, which is a back tension pulley. The pulley diameter, the rotation axis direction, and the position of the sixth pulley 18 are set such that the lead-in wire and the lead-out wire are substantially parallel. The shaft 19 that rotatably supports the sixth pulley 18 is a cylinder drive device 21 in the axial direction of the lead-in wire rod and the lead-out wire rod of the sixth pulley 18.
It is possible to move by. A guide 30 for guiding the wire is fixed to the frame 11 on the introduction side of the fifth pulley 17 of the back tension device 3.

The cylinder drive device 21 is an air cylinder, and its structure and air supply circuit are, as shown in FIG. 3, a cylinder 22 fixed to the frame 11 and reciprocatingly attached to the inner wall of the cylinder 22. Piston 23 and rod 24 fixed to this piston 23
And the sixth pulley 18 described above at the tip of the rod 24.
The shaft 19 of is fixed. Pressure chamber 25 of cylinder 22
Air is supplied from the air supply source 27. The air pressure of the air supplied from the air supply source 27 is controlled to a predetermined pressure by the air regulator 28, and the controlled predetermined air pressure is supplied to the pressure chamber 25. Therefore, the pressure chamber 25
1, a pressing force corresponding to the product of the pressure of the piston and the pressure receiving area of the piston acts on the piston 23, and a constant pressing force is applied to the shaft 19 of the sixth pulley 18 in the left direction in FIG. Is given. As a result, the sixth pulley 18
A constant back tension is applied to the wire drawn out from.

In the winding section 4, the wire is aligned and wound around the core 40 having a square cross section of the bobbin, for example, by rotating the arm 34 in the direction of the arrow 38 by a driving device (not shown). The arm 34 has a seventh pulley 35 and an eighth pulley 36. 6th pulley 1 which is a back tension pulley
The seventh pulley 35, which is the pull-out side pulley of 8, is a wire rod from the fifth pulley 17 to the sixth pulley 18 and the sixth pulley 18.
Is provided in a position parallel to the wire rod extending from the to the seventh pulley 35. That is, the fifth pulley 17, the sixth pulley 18, and the seventh pulley 35 provided in the back tension device 3 and the winding portion 4 are positioned so that the wire rod wound between them is wound in a U shape. Is set.
This is because the cylinder driving device 21 precisely controls the back tension of the wire wound around the core 40 of the winding portion 4. Further, the back tension device 3 is provided in order to improve the winding state of the wire rod in the winding portion 4, and more specifically, since the wire rod is less likely to be loosened, the winding wire can be wound in an aligned manner. Is. Further, by providing the sixth pulley 18 of the back tension device 3 at a position as close to the winding portion 4 as possible, it is possible to reduce the slack of the winding to a minimum and perform good aligned winding. In this embodiment, a flyer type winding unit is used for the winding unit 4. This is because the flyer type winding part does not cause loosening of the wire,
This is because it is easy to perform aligned winding.

Further, in this embodiment, the tensile force F _{1 applied} to the wire by the tension device 2 is set to be larger than the tensile force F _{2 applied} to the wire by the back tension device 3. This is effective in eliminating the looseness of the wire rod at the time of winding the wire rod in the winding portion 4 because the sixth pulley 18 applies the tensile force to the wire rod with a force weaker than the tensile force applied to the wire rod by the tension device 2. Because there is.

According to this embodiment, the core 40 for winding the wire around the winding portion 4 is a square bobbin. However, since this square bobbin has a different maximum outer diameter and a minimum outer diameter, the wire is wound around the square bobbin. If the wire rod is wound, the moving speed of the wire rod wound on the square bobbin changes. Therefore, even if the wire rod moving speed change occurs, the back tension device 3 is functionally provided so as to always apply a substantially constant tension to the wire rod. To work. Therefore, the constant tension holding action by the back tension device 3 is effective when the wire rod is wound around a core such as a square bobbin whose cross-sectional shape is non-circular.

Further, according to the present embodiment, even if the wire moving speed changes, the reciprocating operation of the piston 23 of the back tension device 3 prevents the wire from loosening, and the core 40 of the winding portion 4 is prevented.
Since a constant and constant tensile force can always be applied to the wire wound around, there is an effect that the aligned winding can be satisfactorily performed around the core 40.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a winding device of the present invention.

FIG. 2 is a sectional view showing a wire rod supply source of the embodiment shown in FIG.

3 is a configuration diagram showing a configuration of a cylinder drive device and an air supply circuit of the embodiment shown in FIG. 1. FIG.

[Explanation of symbols]

 1 Winding Supply Source 2 Tensioning Device 3 Back Tensioning Device 4 Winding Part (Flyer Type Winding Part) 17 Fifth Pulley (Introducing Pulley) 18 Sixth Pulley (Back Tension Pulley) 19 Shaft 21 Cylinder Drive 22 Cylinder 23 Piston 24 Rod 27 Air supply source 28 Air regulator (regulator) 35 Seventh pulley (outlet side pulley) 40 Core (square bobbin)

Claims (5)

[Claims] 1. A winding part, a tension device provided on the introduction side of the winding part for applying a tensile force to a wire, and a back tension pulley provided between the tension device and the winding part. A back tension device having a cylinder for urging the shaft of the back tension pulley to apply a back tension to the wire wound around the back tension pulley; and a back tension device having a regulator for adjusting the fluid pressure acting on the cylinder to a constant value. A winding device characterized in that 2. The winding device according to claim 1, wherein the cylinder urges the back tension pulley with a force smaller than a resistance force applied to the wire by the tension device. 3. The winding according to claim 1, wherein an introduction side pulley is provided on the introduction side of the back tension pulley, and a wire rod is wound around the back tension pulley in a U-shape. Line device. 4. The winding device according to claim 1, wherein the winding portion winds a wire on a square bobbin. 5. The winding device according to claim 4, wherein the winding portion is a flyer type winding portion.